docs: def getTransformForOverlayCoordinates(self, ulOverlayHandle, eTrackingOrigin, coordinatesInOverlay):
          """Get the transform in 3d space associated with a specific 2d point in the overlay's coordinate space (where 0,0 is the lower left). -Z points out of the overlay"""
  
          fn = self.function_table.getTransformForOverlayCoordinates
          pmatTransform = HmdMatrix34_t()
          result = fn(ulOverlayHandle, eTrackingOrigin, coordinatesInOverlay, byref(pmatTransform))
          return result, pmatTransform